Remember a bug: ImportError: cannot import name 'comb'

When calling sklearn.model_selection tonight, an error was reported! After a bit of Baidu, I found that the comb position in scipy.misc has been moved to scipy.special, which is a bit small.

from sklearn.model_selection import train_test_split

D:\anaconda3\lib\site-packages\sklearn\model_selection\__init__.py in <module>()
----> 1 from ._split import BaseCrossValidator
      2 from ._split import KFold
      3 from ._split import GroupKFold
      4 from ._split import StratifiedKFold
      5 from ._split import TimeSeriesSplit

D:\anaconda3\lib\site-packages\sklearn\model_selection\_split.py in <module>()
     23 import numpy as np
     24 
---> 25 from scipy.misc import comb
     26 from ..utils import indexable, check_random_state, safe_indexing
     27 from ..utils.validation import _num_samples, column_or_1d

ImportError: cannot import name 'comb'

The solution is as follows:

In the python environment, it can be Anacanda or python, find the following two files, and open them for modification:

• File 1: lib\site-packages\sklearn\model_selection\_split.py, change from scipy.misc import comb in the file to from scipy.special import comb
• File 2: lib\site-packages\sklearn\metrics\cluster\supervised.py, change from scipy.misc import comb in the file to from scipy.special import comb

In the file, you can ctrl+f to enter keywords to quickly locate~~